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Open Access Publications from the University of California

Interactive View-Dependent Rendering Of Large Isosurfaces

  • Author(s): Gregorski, Benjamin F.
  • Duchaineau, Mark A.
  • Lindstrom, Peter
  • Pascucci, Valerio
  • Joy, Ken
  • et al.

We present an algorithm for interactively extracting and rendering isosurfaces of large volume datasets in a view-dependent fashion. A recursive tetrahedral mesh refinement scheme, based on longest edge bisection, is used to hierarchically decompose the data into a multiresolution structure. This data structure allows fast extraction of arbitrary isosurfaces to within user specified view-dependent error bounds. A data layout scheme based on hierarchical space filling curves provides access to the data in a cache coherent manner that follows the data access pattern indicated by the mesh refinement.

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